First of all, I would like to thank Niki for being a caring and welcoming host -- she made our staying great from the very start and till the end :)
The apartment is located in a good area: not far from important shopping&visiting points of Bangkok and BTS station (but the street is quiet, calm and safe). Inside everything looks exactly like in pictures -- all furniture is new, bathroom and kitchen are also new and very clean, and there are some little but nice things like water in the fridge or scented candle in the living room.
I would highly recommend to stay here! And would gladly live here while visiting Bangkok next time.